Valve.



L. DECK.

VALVE.

APPLICATION FILED IAN.22.19I3.

1,1 85,382, Patented May so, 1916.

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IIII I III!!!- Louzlseo THE COLUMBIA PLANOGRAPH :0., WASHINGTON, D. c.

LOUIS DECK, 0F FORT WAYNE, INDIANA.

VALVE.

Specification of Letters Patent.

Patented May 30,1916.

Application filed January 22, 191.3. Serial No. 743,619.

To all whom t 'may concern:

Be it known that I, LOUIS DECK, a citizen of the United States, residingat Fort Wayne, in the county of Allen and State of Indiana, haveinvented new and useful Improvements in Valves, of which the followingis a specification.

The invention relates to valves, and has for an object to provide avalve which can be locked in open or closed position and which operateswith the minimum amount of friction and which is arranged andconstructed to prevent leaking.

The invention embodies, among other features, a valve which includes aminimum amount of packing and in which a number of the parts are made ofa solid material such as metal and which will not readily wear out andcause the valve to leak.

r[he invention still further embodies a valve which can be readilyoperated with a minimum amount of friction and in which the valve stemfor moving the valve member on to or. off of the seat thereof is aseparate element in respect to the key of the valve which, however,operates the valvestem and which is capable simply of rotation, whereasthe valve stem, when rotated, is advanced or retarded in the valvecasing.

In the further disclosure of the invention reference is to be had to theaccompanying drawings, constituting a part of this specilication, inwhich similar characters of reference denote corresponding parts in allthe views and in which:`

Figure 1 is a vertical sectional view of the valve, showing the same inopen position; Fig. 2 is a similar view showing the valve in closedposition; Fig. 3 is a horizontal sectional view taken on the line 3-3 inFig. 1. Fig. 4 is a fragmentary perspective view of the key, parts beingbroken away to disclose the underlying structure; and Fig. 5 is aperspective view of the disk of the valve member.

Referring more particularly to the views, I employ a valve 10 comprisinga valve casing 11 having an inlet 12 and an outlet 13, a valve seat 14being formed in the casing 11 between the inlet 12 and outlet 13thereof.

A bonnet 15 has threaded connection with the casing 1 1 and a valve stem16 has threaded connection with the bonnet, with the lower end of thevalve stem terminating in an apex 17 and having an annular flange 18formed adjacent the said apex, the said lower end of the valve stembeing adapted to depend in the valve casing. The upper end of the valvestem pro- ]ects into a chamber 19 formed in the upper end of the bonnet15 and terminates in a squared shank 20, which is received in a squaredchamber 21 formed in the lower end of a key 22 mounted to rotate in thechamber 19 of the bonnet 15, the upper end of the squared shank 20terminating in a point forming an apex 23 and which engages the innerwall of the key 22, as shown.

The key 22 is spaced from the wall of the chamber 19 and is providedwith an annular flange 24, an expansible helical spring 25 beingarranged in the chamber 19, with one end of the spring abutting againstthe flange 24 and the other end of the spring seating on the bonnet 15,within the chamber 19, it being readily seen by referring to the viewsthat the mentioned spring encircles the lower end of the key 22. The key22 is provided with an integral annular seat 26 which abuts against acap 27 having threaded connection with the bonent 15 and through which athreaded shank 28, integral with the key 22 and forming a part thereof,extends, a suitablepacking 29 being preferably interposed between thecap 27 and the annular flange. 24 to prevent leakage at the point offormation of the seat 26 on the key 22 and at which point the shank ofthe key.

passes through the cap 27.

A plurality of independently operable lock nuts 30 and 31 have threadedconnection with the threaded portion of the shank 28 and it will bereadily seen that vwhen the lock nut 30 is screwed down on the shank toengage the cap 17 and the lock nut 31 then screwed down on to the locknut 30, the key 22 will be held in rigid and locked position relativelyto the bonnet 15, and the valve stem 16, thus locking the valve stemwith respect-to the bonnet. The upper end of the shank 28 of the key 22terminates in a squared reduced portion 32 supporting an operating wheel33 and a cotter pin 34 is passed through an integral annular flange 35formed with the wheel 33 and through the squared portion 32 to securethe wheel on the upper end of the key 22, it being readily seenthat byin the manner mentioned, that the wheel 33 can be operated withoutbringing the hands or clothing of the operator in contact with thecotter pin and which, if the cotter pin mounting the cotter pin wereunduly exposed, would result in the operators clothing becoming torn orscratching the hand of the operator on contact with the free, raggedends of the cotter pin.

As mentioned heretofore, the lower end of the valve stem 16 is providedwith an annular integral flange 18 and a nut 37 is supported on theflange 18, the said nut having an inwardly extending circular flange 38reposing upon the flange 18 as shown, the said nut having an integralreduced annular portion 39 threaded to receive and support a disk 40,the said disk being provided with a beveled surface 41 adapted to engagethe seat 14 formed in the valve casing 11, it being readily seen thatthe nut 37 and disk 40, together with the flange 18, on the lower end ofthe valve stem, constitute a valve member 42 and which, when the disk 40engages the valve seat, closes the inlet 12 of the valve casing 11.

Now assuming that the valve is in closed position, when it is desired toopen the same rotation is imparted to the wheel 33, thus rotating thekey 22 in the chamber 19 of the bonnet 15, and the rotation of the key22 will result in the rotation of the valve stem 16, thus moving thevalve stem vertically in the bonnet 15 and unseating the disk 40 fromthe valve rseat 14 to open the inlet 12 and permit fluid to pass throughthe valve casing and out through the outlet 13, it being further seenthat the spring 25 at all times retains the seat 26 in engagement withthe cap 27 and which, with the provision of the packing 29, preventsleakage at the point where the shank of the valve key passes through thecap 27. Now when the valve member has been opened to the desiredposition, the lock nuts 30 and 31 can be moved into locked position. onthe shank of the valve key, with the lock nut 30 engaging the cap 27 andthe lock nut 31 engaging the lock nut 30, thus locking the key in rigidposition relatively to the bonnet and thus also locking the valve stemin rigid position to prevent accidental displacement of the valve member42. It will be further noted that the length of the sha-nk of the key isrestricted so that there is but a slight portion of the shank exposedwhen the lock nuts 30 and 31 are threadedly mounted on the shank, itbeing thus seen that the provision of the lock nuts will tend toincrease the strength of the shank of the key and prevent accidentalbending or binding of the key at this point.

By providing the fiange 18 and supporting the disk 40 on the valve stemthrough the medium of the nut 37, the disk 40 will be balanced on thelower end of the valve stem and the only point of contact of the valvestern with the disk is at the apex 17, thus minimizing the frictionbetween the valve stem and the disk so that the disk can readily andproperly seat upon the seat 14 in the valve casing 11, it being furtherseen that by forming the apex 23 on the upper end of the valve stem thefriction between the valve stem and the key at this point will also beminimized and in view of this construction a slight rotation of the keywill result in the immediate and positive operation of the valve stemwithout causing any binding of the valve stem relatively to the bonnetand, furthermore, greatly reducing the wear of the disk 40 upon the seat14.

Having thus described my invention, I claim:

In a valve, in combination, a casing, a valve bonnet mounted thereon,said bonnet having a bore therethrough, theinner portion of said borebeing threaded, the remaining portion of said bore being cylindrical andof larger diameter than said threaded portion whereby to provide anannular plane shoulder, a valve stem threaded in the threaded portion ofsaid bore, a valve carried at the lower end of said valve stem, asquared shank formed upon said valve stem, akey of lesser diameter thansaid cylindrical portion of the bore, said key having an internalpolysided bore in which said squared shank is arranged for slidablemovement, a flange formed integrally upon said key and fitting snugly.vithinsaid valve bonnet at its upper portion, said key resting uponsaid shoulder, said flange being disposed below the outer end of saidkey and terminating short of the outer end of said valve bonnet, aspring coiled around said key and engaging said fiange and saidshoulder, a packing mounted upon said flange and surrounding said key, acap threadedly engaging said valve bonnet and adapted to engage said keyto cause the latter to engage said shoulder, a stem upon said keyprojecting beyond said cap, and an operating handle mounted upon saidlast named stem.

In testimony whereof I affix my signature in presence of two Witnesses.

LOUIS DECK.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington. D. G.

